/*
This script is a part of RTD2 plugin and is not meant to work by itself.
If you were to edit anything here, you'd have to recompile rtd2.sp instead of this one.

*** HOW TO ADD A PERK ***
A quick note: This tutorial may not be kept up to date; for an updated one, go to the plugin's thread.

1. Set up:
	a) Have <perkname>.sp in scripting/rtd.
	b) Add it to the includes in scripting/rtd/#perks.sp.
	c) Add a new section with a correct ID (highest one +1) to the config/rtd2_perks.cfg and set its settings.

2. Edit scripting/rtd/#manager.sp
	a) In a function named ManagePerk() add a new case to the switch() with your perk's ID.
	b) In the added case specify a function which is going to execute from <perkname>.sp with parameters:
		1) @client			- the client the perk should be applied to/removed from
		2) @fSpecialPref	- the optional "special" value in config/rtd2_perks.cfg
		2) @enable			- to specify whether the perk should be applied/removed
	c) OPTIONAL: You can specify a function in your perk which should run at OnMapStart() in the Forward_OnMapStart() function.
		You will need it if you'd want to, for example, precache a sound or loop through existing clients.
	d) OPTIONAL: You can specify a function in your perk which should run at OnPlayerRunCmd() in the Forward_OnPlayerRunCmd() function.
		You can use it if you'd need something to run each frame or on a certain button press.
		NOTE: The forwarded client is guaranteed to be valid BUT NOT GUARANTEED IF THEY ARE ALIVE.

3. Script your perk:
	a) Create a public function in <perkname>.sp with parameters @client, @iPref, @bool:apply as an example below
	   - This is the only function used to transfer info between the core and the include
	   - You don't need to include any includes that are in the rtd2.sp
	b) NOTE: If you need to transfer the iPref to a different function, set it globally but remember to use an unique name
	c) Name it AS SAME AS you named the function in the added case in the switch() in #manager.sp
	d) From there, script the functionality like there's no tomorrow
	e) You are free to use IsValidClient(). It returns false when:
		- An incorrect client index is specified
		- Client is not in game
		- Client is fake (bot)
		- Client is Coaching

4. Compile rtd2.sp and you're good to go!

*/

#define SCARYBULLETS_PARTICLE "ghost_glow"

int		g_bHasScaryBullets[MAXPLAYERS+1]	= {false, ...};
int		g_bScaryParticle[MAXPLAYERS+1]		= {-1, ...};
float	g_fScaryStunDuration				= 4.0;

void ScaryBullets_Start(){

	HookEvent("player_hurt", Event_ScaryBullets_PlayerHurt);

}

void ScaryBullets_Perk(int client, const char[] sPref, bool apply){

	if(apply)
		ScaryBullets_ApplyPerk(client, StringToFloat(sPref));
	
	else
		ScaryBullets_RemovePerk(client);

}

void ScaryBullets_ApplyPerk(int client, float fDuration){

	g_fScaryStunDuration		= fDuration;
	g_bHasScaryBullets[client]	= true;
	
	if(g_bScaryParticle[client] < 0)
		g_bScaryParticle[client] = CreateParticle(client, SCARYBULLETS_PARTICLE);

}

void ScaryBullets_RemovePerk(int client){

	if(g_bScaryParticle[client] > MaxClients && IsValidEntity(g_bScaryParticle[client])){
		AcceptEntityInput(g_bScaryParticle[client], "Kill");
		g_bScaryParticle[client] = -1;
	}

	g_bHasScaryBullets[client] = false;

}

public void Event_ScaryBullets_PlayerHurt(Handle hEvent, const char[] sEventName, bool bDontBroadcast){
	
	int attacker = GetClientOfUserId(GetEventInt(hEvent, "attacker"));
	if(!IsValidClient(attacker))			return;

	if(!g_bHasScaryBullets[attacker])		return;

	int victim = GetClientOfUserId(GetEventInt(hEvent, "userid"));
	if(attacker == victim)					return;
	if(!IsClientInGame(victim))				return;
	if(victim < 1 || victim > MaxClients)	return;
	
	if(IsPlayerAlive(victim) && GetEventInt(hEvent, "health") > 0 && !TF2_IsPlayerInCondition(victim, TFCond_Dazed))
		TF2_StunPlayer(victim, g_fScaryStunDuration, _, TF_STUNFLAGS_GHOSTSCARE, attacker);

}